Question

5 вопрос................​

Answer 1

Ответ:

sin² x-3sin x cos x + 2cos² x=0

(cos x-sin x)(2cos x-sin x)=0

cos x-sin x=0; 2cos x-sin x=0

cos x=sin x; 2cot x=1

cot x=1;  cot x= 1/2

x=πn₁+π/4,  n₁ ∈ Z